* Oil adds to 2 pct rally, rising further above $51 a barrel
* Equities rise on recovery expectations, earnings
* World Health Organisation says swine flu pandemic imminent
* Mexico orders five-day partial economic shutdown
(Updates prices, detail, previous dateline Singapore)
By David Sheppard
LONDON, April 30 (Reuters) - Oil rose towards $52 a barrel on Thursday, extending the previous day's gains as traders focused on improving economic data and draining fuel stocks rather than the swine flu outbreak.
A surprise 4.7 million barrel decline in U.S. gasoline stocks ahead of the driving season and stock market gains aided oil's 2 percent rise on Wednesday, although prices remained stuck in the $45-$55 range of the past six weeks.
U.S. light, sweet crude <CLc1> for June delivery rose 72 cents to $51.69 a barrel by 0855 GMT. Brent crude <LCOc1> gained 36 cents to $51.14.
Prices are on track to gain 3 percent this month, their third monthly rise, but the rebound from February's $33 low has slowed as traders await further evidence the economy's decline is easing, offering an improved outlook for oil demand.
"Investors are looking to see if we're on the cusp of a real recovery, with consumer confidence starting to improve just as the U.S. driving season approaches," Bank of Ireland analyst Paul Harris said.
"In that context, swine flu has become almost a sideshow for the oil market -- it might impact demand in specific areas like jet fuel, but if we can confirm the overall economy has bottomed, prices should slowly grind higher."
The World Health Organization (WHO) raised its threat level on the swine flu virus and said a possible pandemic was imminent. However, the WHO has stopped short of recommending travel restrictions or border closures.
Mexican President Filipe Calderon ordered a five-day partial shutdown of the economy on Friday to try to contain the virus. [
]Bulging U.S. crude stocks helped keep price gains in check. The Energy Information Administration's weekly report showed a 4.1 million barrel increase in crude oil stockpiles, bringing inventories to a new 19-year high, and a 1.8 million barrel increase in unseasonally high distillate stocks. [
]Weak demand and low prices have encouraged traders to store crude. Future oil contracts for delivery further down the line are trading at a significant premium to current prices, with oil for delivery one year hence above $61 a barrel.
Commerzbank analyst Eugen Weinberg said U.S. imports had been boosted by the market structure.
"That additional volumes of crude are being sent to the U.S. at a time when demand for crude is stalling appears odd," Weinberg said in a research note.
"(But) storage of this crude geographically near to where U.S. crude is priced enables the most efficient capturing of the value in the forward curve when trading in physical barrels of oil."
ECONOMIC SIGNALS
World stocks struck a four-month peak on Thursday, powered by gains in Asia, as investors took heart from signs of improvement in the U.S. economy suggesting regional exporters may need to start cranking up production. [
]Traders looked past the surprisingly big 6.1 percent contraction in the economy in the first quarter to focus on the details of a big run-down in inventories.
Hints of future expansion were further reinforced by comments from the U.S. Federal Reserve, which said the pace of deterioration in the economy appeared to be slowing. [
] [ ]Adding to the growing glimmers of economic hope, industrial output in hard-hit Japan rose 1.6 percent in March, the first gain in six months. (Additional reporting by Jonathan Leff and Maryelle Demongeot in Singapore; Editing by Anthony Barker)